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Full text of "USPTO Patents Application 10812286"

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03-2545 
1496.00369 

CLAIMS 

1. A method for processing an input signal, comprising 
the steps of: 

(A) extracting a compressed signal and a first checksum 
from said input signal; 

(B) generating a decompressed signal by decompressing 
said compressed signal; 

(C) calculating a second checksum for said decompressed 
signal; and 

(D) generating a result by comparing said first checksum 
to said second checksum. 

2. The method according to claim 1, further comprising 
the steps of: 

extracting a quality value from said input signal, (i) 
said quality value indicating a correlation between an original 
signal and a reconstructed signal and (ii) said reconstructed 
signal being generated by decompressing said compressed signal; and 

transferring said decompressed signal, said quality value 
and said result to a user. 



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3. The method according to claim 2, wherein (i) said 
input signal comprises a digital video bitstream in an encoded 
form, (ii) said quality value comprises a peak signal-to-noise 
ratio, (iii) said first checksum comprises a cyclic redundancy 
check and (iv) said result indicates one of a match and a non-match 
between said first checksum and said second checksum. 

4. The method according to claim 1, wherein step (C) 
comprises the sub-step of: 

calculating said second checksum for a sub-picture of 
video in said decompressed signal . 

5. The method according to claim 1, wherein step (C) 
comprises the sub-step of: 

calculating said second checksum for a macroblock of 
video in said decompressed signal . 

6. The method according to claim 1, wherein said second 
checksum comprises a plurality of checksums, one each for at least 
a luminance channel, a first chrominance channel and a second 
chrominance channel of said decompressed signal . 



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7. The method according to claim 1 wherein said 
decompressed signal comprises an audio signal . 

8. The method according to claim 1, wherein said input 
signal is compliant with at least one of an International 
Organization for Standardization/International Electrotechnical 
Commission 14496-10 standard and an International Telecommunication 

5 Union-Telecommunications Standardization Sector Recommendation 
H.264 accounting for said first checksum. 

9. The method according to claim 1, wherein step (C) 
comprises the sub-step of: 

calculating said second checksum by summing each absolute 
difference of two consecutive data samples over a predetermined 
5 number of said consecutive data samples within said decompressed 
signal . 



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1496.00369 

10. A method for processing an input signal, comprising 
the steps of: 

(A) extracting a compressed signal and a quality value 
from said input signal, (i) said quality value indicating a 
correlation between an original signal and a reconstructed signal 
and (ii) said reconstructed signal being generated by decompressing 
said compressed signal; 

(B) generating a decompressed signal by decompressing 
said compressed signal; and 

(C) transferring said decompressed signal and said 
quality value to a user. 

11. The method according to claim 10, further comprising 
the steps of: 

extracting a first checksum from said input signal; 
calculating a second checksum for said decompressed 

signal ; 

generating a result by comparing said first checksum to 
said second checksum; and 

transferring said result to said user. 



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12. The method according to claim 11, wherein (i) said 
input signal comprises a digital video bitstream in an encoded 
form, (ii) said quality value is a peak signal-to-noise ratio, 
(iii) said first checksum comprises a cyclic redundancy check and 

5 (iv) said result indicates one of a match and a non-match between 
said first checksum and said second checksum. 

13. The method according to claim 10, wherein said 
quality value comprises a signal-to-noise ratio having a noise 
component based on a difference between said original signal and 
said reconstructed signal . 

14. The method according to claim 10, wherein said 
quality value comprises a sum of absolute differences between said 
original signal and said reconstructed signal . 

15. The method according to claim 10, wherein said 
quality value comprises a plurality of values, one each for at 
least a luminance channel, a first chrominance channel and a second 
chrominance channel of said original signal . 



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1496.00369 

16. The method according to claim 10, wherein said input 
signal is compliant with at least one of an International 
Organization for Standardization/International Electrotechnical 
Commission 144 96-10 standard and an International Telecommunication 
Union- Telecommunications Standardization Sector Recommendation 
H.264 accounting for said quality value. 

17. A method for processing an original signal, 
comprising the steps of: 

(A) generating a compressed signal by compressing said 
original signal; 

(B) generating a reconstructed signal by decompressing 
said compressed signal; 

(C) calculating at least one of (i) a first checksum for 
said reconstructed signal and (ii) a quality value indicating a 
correlation between said original signal and said reconstructed 
signal; and 

(D) generating an output signal comprising said 
compressed signal and said at least one of said checksum and said 
quality value. 



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18. The method according to claim 17, wherein said first 
checksum comprises a plurality of checksums, one each for at least 
a luminance channel, a first chrominance channel and a second 
chrominance channel of said original signal. 

19. The method according to claim 17, wherein said first 
checksum covers a sub-picture of video in said reconstructed 
signal . 

20. The method according to claim 17, wherein said first 
checksum covers a macroblock of video in said reconstructed signal. 

21. The method according to claim 17, wherein (i) said 
original signal comprises a video signal, (ii) said quality value 
comprises a peak signal-to-noise ratio and (iii) said first 
checksum comprises a cyclic redundancy check. 

22. The method according to claim 17, wherein said 
original signal comprises an audio signal. 



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1496.00369 

23. The method according to claim 17, further comprising 
the step of: 

transferring said quality value to a user. 

24. The method according to claim 17, wherein said 
output signal is compliant with at least one of an International 
Organization for Standardization/International Electrotechnical 
Commission 14496-10 standard and an International Telecommunication 
Union-Telecommunications Standardization Sector Recommendation 
H.264 accounting for said quality value and said first checksum. 

25. The method according to claim 17, wherein step. (C) 
comprises the sub-step of: 

calculating said first checksum by summing each absolute 
difference of two consecutive data samples oyer a predetermined 
number of said consecutive data samples within said reconstructed 
signal . 



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